172100153 has 4 divisors (see below), whose sum is σ = 174668880. Its totient is φ = 169531428.

The previous prime is 172100111. The next prime is 172100161. The reversal of 172100153 is 351001271.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 351001271 = 139 ⋅2525189.

It is a cyclic number.

It is not a de Polignac number, because 172100153 - 2¹⁰ = 172099129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172103153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1284263 + ... + 1284396.

It is an arithmetic number, because the mean of its divisors is an integer number (43667220).

Almost surely, 2^172100153 is an apocalyptic number.

It is an amenable number.

172100153 is a deficient number, since it is larger than the sum of its proper divisors (2568727).

172100153 is an equidigital number, since it uses as much as digits as its factorization.

172100153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2568726.

The product of its (nonzero) digits is 210, while the sum is 20.

The square root of 172100153 is about 13118.6947902602. The cubic root of 172100153 is about 556.2376976953.

The spelling of 172100153 in words is "one hundred seventy-two million, one hundred thousand, one hundred fifty-three".